IOGEAR GBU521 USB Bluetooth 4.0 USB Micro Adapter Bluetooth Standards: Bluetooth 4.0 Dimensions: 0.38 x 0.75 x 0.69 Weight: 1 Package Contents: 1 x Bluetooth to USB adapter 1 x Driver/Manual CD 1 x Quick Start Guide 1 x Warranty / Registration Card Warning: The included CD is a mini size CD, and it is recommended not to insert the mini size CD into the slot-loading CD ROM drive to avoid damaging the slot-loading CD ROM drive.